Exhaust structure of metallurgical furnace

Abstract

The utility model relates to the technical field of exhaust structures, in particular to an exhaust structure of a metallurgical furnace, which prevents cooled gas from flowing back into the external metallurgical furnace, avoids the phenomenon of furnace explosion, prolongs the contact time of the gas and reaction liquid, and improves the purification effect of harmful gas in the gas. Comprising a purification body and a connecting pipe, a cavity is formed in the purification body, an exhaust pipe is arranged at the bottom of the right end of the purification body, the connecting pipe is fixed to the left side of the top end of the purification body, the bottom end of the connecting pipe extends into the bottom of the cavity of the purification body, and the other end of the connecting pipe is connected with an external metallurgical furnace; the device further comprises a cooling mechanism, multiple sets of partition plates and a spraying mechanism, an injection and discharge pipe is arranged on the left side of the bottom end of the purification body, and the cooling mechanism is installed at the bottom of the left side of the cavity of the purification body and used for cooling waste gas discharged into the purification body from the connecting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust structures, in particular to an exhaust structure for a metallurgical furnace. Background Art

[0002] As is known to all, most production links of iron and steel metallurgy and nonferrous metallurgy are inseparable from metallurgical furnaces. Metallurgical furnaces are used to perform thermal treatment on various materials or workpieces during the production process, and a relatively high pressure will be formed inside. Therefore, an exhaust structure is required to purify the high-pressure gas inside the metallurgical furnace and discharge it. After searching the patent document with the announcement number CN218834101U, a waste gas treatment device for metallurgical furnace charge production is provided, including an exhaust pipe, a cooling structure is fixed on the outside of the exhaust pipe, one end of the exhaust pipe is fixedly connected to a connecting pipe, brackets are fixed on the outer walls of both ends of the cooling structure, and a filtering structure is arranged on the outside of the connecting pipe away from one end of the exhaust pipe; a connecting pipe is arranged inside the filtering structure, one end of the connecting pipe extends to the outside of the filtering structure and is connected to a protective structure, a discharge pipe is arranged on the top of the protective structure, and the cooling structure includes a cooling seat, the cooling seat is fixed on the outside of the exhaust pipe, and the cooling A water cooling chamber is provided on one side of the temperature seat near the exhaust pipe, and fixed seats are fixed on the outer walls of both ends of the cooling seat, a drain port is fixed on one side of the top of the cooling seat, and a water inlet is fixed on one side of the bottom of the cooling seat, the water inlet is connected to a water inlet pipe, and the drain port is connected to a drain pipe, cold water is transported to the inside of the water cooling chamber through the water inlet, and then discharged through the drain port. The protective structure includes a reaction tank, which is arranged on one side of the filter box, a reaction chamber is arranged inside the reaction tank, a sealing cover is sealed at the top of the reaction tank, and a reaction liquid is arranged inside the reaction chamber. However, it is found during its use that the gas in the exhaust pipe will liquefy and flow back into the metallurgical furnace when cooled, which not only affects the subsequent gas discharge, but also easily causes the metallurgical furnace to explode. At the same time, the gas stays in the reaction tank for a short time, making it difficult to fully react with the reaction liquid, resulting in poor purification effect of harmful gases in the gas. A metallurgical furnace exhaust structure is provided to solve the above problems. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a metallurgical furnace exhaust structure which prevents the gas from flowing back to the outside of the metallurgical furnace after cooling, thereby avoiding the furnace explosion phenomenon, and at the same time prolongs the contact time between the gas and the reaction liquid, thereby improving the purification effect of harmful gases.

[0004] The utility model discloses an exhaust structure for a metallurgical furnace, comprising a purification body and a connecting pipe, wherein a chamber is arranged inside the purification body, an exhaust pipe is arranged at the bottom of the right end of the purification body, the connecting pipe is fixed to the left side of the top end of the purification body, and the bottom end of the connecting pipe extends into the bottom of the chamber of the purification body, and the other end of the connecting pipe is connected to the external metallurgical furnace, and further comprises a cooling mechanism, a plurality of baffles and a spray mechanism, an injection and discharge pipe is arranged on the left side of the bottom end of the purification body, the cooling mechanism is installed at the bottom of the left side of the chamber of the purification body, the cooling mechanism is used for cooling the exhaust gas discharged from the connecting pipe into the purification body, and the plurality of baffles are respectively and evenly fixed at the upper and lower ends of the chamber of the purification body in an interlaced manner, and the spray mechanism is installed on the purification body, and the spray mechanism is used for spraying the reaction gas into the purification body liquid; the exhaust gas generated by the external metallurgical furnace is introduced into the purification body through the connecting pipe, and cooling water is injected into the bottom left side of the purification body chamber in advance, so that the cooling water, under the cooperation of the cooling mechanism, cools the high-temperature gas entering the purification body and filters the dust at the same time, avoiding the gas from flowing back to the external metallurgical furnace after cooling, avoiding the explosion of the furnace, and the gas after cooling and dust filtering flows in the space path formed by multiple groups of partitions. At this time, the reaction liquid is sprayed into the purification body through the spray mechanism, so that the reaction liquid reacts with the harmful gas in the gas, and the gas flows in the space path formed by multiple groups of partitions, prolonging the contact time between the gas and the reaction liquid, improving the effect of purifying the harmful gas in the gas, and the purified gas can be discharged from the exhaust pipe of the purification body.

[0005] Preferably, the cooling mechanism includes a refrigerator, a motor fixing frame, a motor, two groups of stirring shafts, two groups of sprockets, chains and multiple groups of stirring rods. The refrigerator is installed at the bottom left of the rear end of the purification body. The refrigerator is used to continuously cool the cooling water in the purification body, and the motor is fixed to the front side of the left end of the purification body through the motor fixing frame. The output end of the motor is connected to a group of stirring shafts, and the two groups of stirring shafts are respectively rotatably connected to the front and rear sides of the left end of the purification body, and the two groups of stirring shafts are rotatably connected to the leftmost partition, and the two groups of sprockets are respectively fixed on the left sides of the two groups of stirring shafts, and the two The sprockets are connected by chain transmission, and multiple groups of stirring rods are evenly fixed on two groups of stirring shafts. The refrigerator cools the cooling water in the purification body, so that the cooling water cools the gas introduced into the purification body through the connecting pipe and filters dust. At the same time, the stirring shaft is driven by the motor to rotate, so that the stirring shaft drives the sprocket to rotate. The two groups of sprockets are connected by chain transmission, so that the two groups of stirring shafts rotate at the same time, and multiple groups of stirring rods rotate at the same time. The cooling water in the purification body is stirred by the stirring rods, the flow of cooling water is accelerated, and the cooling rate of cooling water is increased.

[0006] Preferably, the spray mechanism includes a liquid storage tank, a delivery pump, a delivery pipe, an arrangement pipe, multiple groups of branch pipes and multiple groups of spray pipes, the liquid storage tank is fixed on the right side of the top end of the purification body, a liquid injection pipe is arranged on the top of the liquid storage tank, and the delivery pump is fixed on the rear end bottom of the liquid storage tank, the output end of the delivery pump is connected to the delivery pipe, and the other end of the delivery pipe is connected to the arrangement pipe, multiple groups of branch pipes are respectively and evenly fixed at the rear end of the purification body, and the branch pipes are connected to the arrangement pipe, and the other end of the branch pipe is connected to the spray pipe, multiple groups of spray pipes are evenly fixed in the chamber of the purification body, multiple groups of spray pipes are respectively located between two adjacent groups of partitions, and multiple groups of spray heads are arranged at the front end of the spray pipe, and two groups of drainage pipes are arranged on the right side of the bottom end of the purification body; the delivery pump is started, and the reaction liquid in the liquid storage tank is delivered to the spray pipe through the coordinated use of the delivery pump, the delivery pipe, the arrangement pipe and the branch pipe, and sprayed into the purification body through the spray head on the spray pipe to react with the gas, so as to achieve purification of harmful gases in the gas and provide power for spraying the reaction liquid.

[0007] Preferably, two sets of sealing rings are further included, which are respectively installed at the connection points between the two sets of stirring shafts and the purification body; by providing the sealing rings, the cooling water in the purification body is prevented from leaking from the connection point between the stirring shaft and the purification body, thereby improving the sealing performance of the device.

[0008] Preferably, it also includes an observation window, which is installed at the front end of the purification body. By setting the observation window, it is convenient to observe the purification status of the gas inside the purification body, thereby improving the convenience of using the device.

[0009] Preferably, a liquid level observation window is provided on the right side of the front end of the liquid storage tank; by providing the liquid level observation window, it is convenient to observe the remaining reaction liquid inside the liquid storage tank, and it is convenient for the staff to replenish the reaction liquid into the liquid storage tank in time, thereby further improving the convenience of use of the device.

[0010] Preferably, the motor is a silencer motor; by providing a silencer motor, noise pollution is reduced and the use effect of the device is improved.

[0011] Preferably, the material of the partition is stainless steel; by setting the stainless steel material, the structural strength of the device is improved, and at the same time, stainless steel is not easily corroded, thereby increasing the service life of the device.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the exhaust gas generated by the external metallurgical furnace is introduced into the purification body through the connecting pipe, and cooling water is injected into the left bottom of the purification body chamber in advance, so that the cooling water, under the cooperation of the cooling mechanism, cools the high-temperature gas entering the purification body and filters the dust at the same time, thereby avoiding the gas from flowing back to the external metallurgical furnace after cooling, avoiding the explosion of the furnace, and the gas after cooling and dust filtration flows in the space path formed by multiple groups of partitions. At this time, the reaction liquid is sprayed into the purification body through the spray mechanism, so that the reaction liquid reacts with the harmful gas in the gas, and the gas flows in the space path formed by multiple groups of partitions, extending the contact time between the gas and the reaction liquid, improving the effect of purifying the harmful gas in the gas, and the purified gas can be discharged from the exhaust pipe of the purification body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the first axonometric and internal cross-sectional structure of the utility model;

[0014] Figure 2 It is a second axonometric structural schematic diagram of the utility model;

[0015] Figure 3 It is a third axonometric structural schematic diagram of the utility model;

[0016] Figure 4 It is a schematic diagram of the front view and internal cross-sectional structure of the utility model;

[0017] Figure 5 This utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 6 This utility model Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0019] Markings in the attached figure: 1. purification body; 2. connecting pipe; 3. partition; 4. refrigerator; 5. motor fixing bracket; 6. motor; 7. stirring shaft; 8. sprocket; 9. chain; 10. stirring rod; 11. liquid storage tank; 12. delivery pump; 13. delivery pipe; 14. distribution pipe; 15. branch pipe; 16. spray pipe; 17. sealing ring; 18. observation window; 19. liquid level observation window. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example 1

[0021] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, it includes a purification body 1 and a connecting pipe 2, a chamber is arranged inside the purification body 1, an exhaust pipe is arranged at the bottom of the right end of the purification body 1, the connecting pipe 2 is fixed to the left side of the top of the purification body 1, and the bottom end of the connecting pipe 2 extends into the bottom of the chamber of the purification body 1, and the other end of the connecting pipe 2 is connected to the external metallurgical furnace, and also includes a cooling mechanism, multiple groups of partitions 3 and a spray mechanism, an injection and discharge pipe is arranged on the left side of the bottom end of the purification body 1, the cooling mechanism includes a refrigerator 4, a motor fixing frame 5, a motor 6, two groups of stirring shafts 7, two groups of sprockets 8, a chain 9 and multiple groups of stirring rods 10, the refrigerator 4 is installed at the bottom of the left side of the rear end of the purification body 1, and the refrigerator The machine 4 is used to continuously cool the cooling water in the purification body 1, and the motor 6 is fixed to the front side of the left end of the purification body 1 through the motor fixing frame 5, the output end of the motor 6 is connected to a group of stirring shafts 7, the two groups of stirring shafts 7 are respectively rotatably connected to the front and rear sides of the left end of the purification body 1, and the two groups of stirring shafts 7 are both rotatably connected to the leftmost partition 3, two groups of sprockets 8 are respectively fixed to the left sides of the two groups of stirring shafts 7, and the two groups of sprockets 8 are connected by a chain 9 transmission, multiple groups of stirring rods 10 are respectively evenly fixed on the two groups of stirring shafts 7, and multiple groups of partitions 3 are respectively and evenly fixed to the upper and lower ends of the chamber of the purification body 1 in an interlaced manner, and the spray machine The structure is installed on the purification body 1, and the spray mechanism is used to spray the reaction liquid into the purification body 1; the exhaust gas generated by the external metallurgical furnace is introduced into the purification body 1 through the connecting pipe 2, and cooling water is pre-injected into the bottom of the left side of the chamber of the purification body 1, so that the cooling water cools the gas introduced into the purification body 1 through the connecting pipe 2 and filters dust, and the cooling water in the purification body 1 is refrigerated by the refrigerator 4, and at the same time, the stirring shaft 7 is driven to rotate by the motor 6, so that the stirring shaft 7 drives the sprocket 8 to rotate, and the two sets of sprockets 8 are connected by a chain 9, so that the two sets of stirring shafts 7 rotate at the same time, and multiple sets of stirring rods 10 rotate at the same time, through the stirring rod 1 0 The cooling water in the purification body 1 is stirred to speed up the flow of the cooling water, ensure the cooling rate of the cooling water, and avoid the gas from flowing back to the external metallurgical furnace after cooling, so as to avoid the explosion of the furnace. The gas after cooling and dust filtration flows in the space path formed by the multiple groups of partitions 3. At this time, the reaction liquid is sprayed into the purification body 1 through the spray mechanism, so that the reaction liquid reacts with the harmful gas in the gas, and the gas flows in the space path formed by the multiple groups of partitions 3, which prolongs the contact time between the gas and the reaction liquid, improves the effect of purifying the harmful gas in the gas, and the purified gas can be discharged from the exhaust pipe of the purification body 1. Example 2

[0022] like Figure 3 , Figure 4 and Figure 5As shown, it includes a purification body 1 and a connecting pipe 2, a chamber is arranged inside the purification body 1, an exhaust pipe is arranged at the bottom of the right end of the purification body 1, the connecting pipe 2 is fixed to the left side of the top of the purification body 1, and the bottom end of the connecting pipe 2 extends into the bottom of the chamber of the purification body 1, and the other end of the connecting pipe 2 is connected to the external metallurgical furnace, and also includes a cooling mechanism, a plurality of baffles 3 and a spray mechanism, an injection and discharge pipe is arranged on the left side of the bottom end of the purification body 1, and the cooling mechanism is installed at the bottom of the left side of the chamber of the purification body 1, and the cooling mechanism is used to cool the exhaust gas discharged from the connecting pipe 2 into the purification body 1, and the plurality of baffles 3 are respectively connected to each other. The spray mechanism includes a liquid storage tank 11, a delivery pump 12, a delivery pipe 13, an arrangement pipe 14, multiple groups of branch pipes 15 and multiple groups of spray pipes 16. The liquid storage tank 11 is fixed on the right side of the top of the purification body 1. The top of the liquid storage tank 11 is provided with a liquid injection pipe, and the delivery pump 12 is fixed at the bottom of the rear end of the liquid storage tank 11. The output end of the delivery pump 12 is connected to the delivery pipe 13, and the other end of the delivery pipe 13 is connected to the arrangement pipe 14. Multiple groups of branch pipes 15 are respectively and evenly fixed at the rear end of the purification body 1, and the branch pipes 15 are connected to the arrangement pipe 14. The branch pipes 15 The other end is connected with the spray pipe 16, and multiple groups of spray pipes 16 are evenly fixed in the chamber of the purification body 1. The multiple groups of spray pipes 16 are respectively located between two adjacent groups of partitions 3, and multiple groups of spray heads are arranged at the front end of the spray pipe 16. Two groups of drainage pipes are arranged on the right side of the bottom end of the purification body 1; the exhaust gas generated by the external metallurgical furnace is introduced into the purification body 1 through the connecting pipe 2, and cooling water is injected into the bottom of the left side of the chamber of the purification body 1 in advance, so that the cooling water, under the cooperation of the cooling mechanism, cools the high-temperature gas entering the purification body 1 and filters the dust at the same time, avoiding the gas from flowing back to the external metallurgical furnace after cooling, avoiding To avoid furnace explosion, the gas for cooling and filtering dust flows in the space path formed by multiple groups of partitions 3. At this time, the delivery pump 12 is started, and the reaction liquid in the liquid storage tank 11 is delivered to the spray pipe 16 through the coordinated use of the delivery pump 12, the delivery pipe 13, the arrangement pipe 14 and the branch pipe 15, and is sprayed into the purification body 1 through the spray head on the spray pipe 16 to react with the harmful gas. The gas flows in the space path formed by multiple groups of partitions 3, which prolongs the contact time between the gas and the reaction liquid, improves the effect of purifying harmful gases in the gas, and the purified gas can be discharged from the exhaust pipe of the purification body 1.

[0023] like Figures 1 to 6As shown, the utility model is a metallurgical furnace exhaust structure. When it is working, the exhaust gas generated by the external metallurgical furnace is first introduced into the purification body 1 through the connecting pipe 2, and cooling water is injected into the bottom left side of the chamber of the purification body 1 in advance, so that the cooling water cools down the gas introduced into the purification body 1 through the connecting pipe 2 and filters dust, and the cooling water in the purification body 1 is refrigerated by the refrigerator 4, and at the same time, the stirring shaft 7 is driven to rotate by the motor 6, so that the stirring shaft 7 drives the sprocket 8 to rotate, and the two groups of sprockets 8 are connected by the chain 9 transmission, so that the two groups of stirring shafts 7 rotate at the same time, and multiple groups of stirring rods 10 rotate at the same time, and the cooling water in the purification body 1 is stirred by the stirring rod 10, so as to accelerate the flow of cooling water, ensure the cooling rate of cooling water, and avoid the gas from flowing back to the external metallurgical furnace after cooling, so as to avoid the explosion of the furnace, and then the gas that cools down and filters dust flows in the space path formed by multiple groups of partitions 3, and the delivery pump is started at this time. 12. Through the coordinated use of the delivery pump 12, the delivery pipe 13, the arrangement pipe 14 and the branch pipe 15, the reaction liquid inside the liquid storage tank 11 is transported to the spray pipe 16, and sprayed into the purification body 1 through the spray head on the spray pipe 16 to react with the harmful gas. The gas flows in the space path formed by the multiple groups of partitions 3, which prolongs the contact time between the gas and the reaction liquid, improves the effect of purifying the harmful gas in the gas, and the purified gas can be discharged from the exhaust pipe of the purification body 1. Then, by setting the sealing ring 17, the cooling water in the purification body 1 is prevented from leaking from the connection between the stirring shaft 7 and the purification body 1, thereby improving the sealing performance of the device. In addition, by setting the observation window 18, it is convenient to observe the purification status of the gas inside the purification body 1. At the same time, by setting the liquid level observation window 19, it is convenient to observe the remaining status of the reaction liquid inside the liquid storage tank 11, so that the staff can replenish the reaction liquid into the liquid storage tank 11 in time, thereby improving the convenience of use of the device.

[0024] The purification body 1, refrigerator 4, motor 6 and delivery pump 12 of the metallurgical furnace exhaust structure of the utility model are purchased on the market and are prior art. The technicians in the industry only need to install and operate them according to the accompanying instruction manual without the need for creative labor by the technicians in this field.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A metallurgical furnace exhaust structure, comprising a purification body (1) and a connecting pipe (2), wherein a chamber is arranged inside the purification body (1), an exhaust pipe is arranged at the bottom of the right end of the purification body (1), the connecting pipe (2) is fixed to the left side of the top end of the purification body (1), and the bottom end of the connecting pipe (2) extends into the bottom of the chamber of the purification body (1), and the other end of the connecting pipe (2) is connected to an external metallurgical furnace, characterized in that: It also includes a cooling mechanism, a plurality of baffles (3) and a spray mechanism. An injection and discharge pipe is provided on the left side of the bottom end of the purification body (1). The cooling mechanism is installed at the bottom of the left side of the chamber of the purification body (1). The cooling mechanism is used to cool the waste gas discharged from the connecting pipe (2) into the purification body (1). The plurality of baffles (3) are evenly fixed at the upper and lower ends of the chamber of the purification body (1) in an interlaced manner. The spray mechanism is installed on the purification body (1). The spray mechanism is used to spray the reaction liquid into the purification body (1).

2. A metallurgical furnace exhaust structure according to claim 1, characterized in that: The cooling mechanism comprises a refrigerator (4), a motor fixing frame (5), a motor (6), two groups of stirring shafts (7), two groups of sprocket wheels (8), a chain (9) and a plurality of groups of stirring rods (10). The refrigerator (4) is mounted on the bottom left side of the rear end of the purification body (1). The refrigerator (4) is used to continuously cool the cooling water in the purification body (1). The motor (6) is fixed to the front side of the left end of the purification body (1) through the motor fixing frame (5). The output end of the motor (6) is connected to a group of stirring shafts (7). The two groups of stirring shafts (7) are respectively rotatably connected to the front and rear sides of the left end of the purification body (1). The two groups of stirring shafts (7) are both rotatably connected to the leftmost partition (3). The two groups of sprocket wheels (8) are respectively fixed to the left sides of the two groups of stirring shafts (7). The two groups of sprocket wheels (8) are connected to each other through the chain (9). The plurality of groups of stirring rods (10) are respectively and evenly fixed to the two groups of stirring shafts (7).

3. A metallurgical furnace exhaust structure according to claim 1, characterized in that: The spray mechanism comprises a liquid storage tank (11), a delivery pump (12), a delivery pipe (13), an arrangement pipe (14), a plurality of branch pipes (15) and a plurality of spray pipes (16). The liquid storage tank (11) is fixed to the right side of the top end of the purification body (1). A liquid injection pipe is provided at the top end of the liquid storage tank (11). The delivery pump (12) is fixed to the bottom of the rear end of the liquid storage tank (11). The output end of the delivery pump (12) is connected to the delivery pipe (13). The other end of the delivery pipe (13) is connected to the arrangement pipe (14). ), multiple groups of branch pipes (15) are evenly fixed at the rear end of the purification body (1), and the branch pipes (15) are connected to the distribution pipe (14), and the other end of the branch pipe (15) is connected to the spray pipe (16), and the multiple groups of spray pipes (16) are evenly fixed in the chamber of the purification body (1), and the multiple groups of spray pipes (16) are respectively located between two adjacent groups of partitions (3), and multiple groups of spray heads are arranged at the front end of the spray pipe (16), and two groups of drainage pipes are arranged on the right side of the bottom end of the purification body (1).

4. A metallurgical furnace exhaust structure according to claim 2, characterized in that: It also includes two sets of sealing rings (17), which are respectively installed at the connection points between the two sets of stirring shafts (7) and the purification body (1).

5. A metallurgical furnace exhaust structure according to claim 1, characterized in that: It also includes an observation window (18), which is installed at the front end of the purification body (1).

6. A metallurgical furnace exhaust structure as claimed in claim 3, characterized in that: A liquid level observation window (19) is provided on the right side of the front end of the liquid storage tank (11).

7. A metallurgical furnace exhaust structure according to claim 2, characterized in that: The motor (6) is a silencer motor.

8. The metallurgical furnace exhaust structure according to claim 1, characterized in that: The material of the partition plate (3) is stainless steel.

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